EP1602485A2 - Tête d'éjection de liquide et dispositif d'éjection de liquide utilisable avec - Google Patents

Tête d'éjection de liquide et dispositif d'éjection de liquide utilisable avec Download PDF

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Publication number
EP1602485A2
EP1602485A2 EP05011941A EP05011941A EP1602485A2 EP 1602485 A2 EP1602485 A2 EP 1602485A2 EP 05011941 A EP05011941 A EP 05011941A EP 05011941 A EP05011941 A EP 05011941A EP 1602485 A2 EP1602485 A2 EP 1602485A2
Authority
EP
European Patent Office
Prior art keywords
contact pad
liquid ejecting
liquid
ejecting head
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05011941A
Other languages
German (de)
English (en)
Other versions
EP1602485B1 (fr
EP1602485A3 (fr
Inventor
Yoshiyuki Toge
Yoshiyuki Imanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP1602485A2 publication Critical patent/EP1602485A2/fr
Publication of EP1602485A3 publication Critical patent/EP1602485A3/fr
Application granted granted Critical
Publication of EP1602485B1 publication Critical patent/EP1602485B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14072—Electrical connections, e.g. details on electrodes, connecting the chip to the outside...
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17526—Electrical contacts to the cartridge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17543—Cartridge presence detection or type identification
    • B41J2/17546—Cartridge presence detection or type identification electronically

Definitions

  • the present invention relates to a liquid ejecting head for ejecting liquid such as ink and a liquid ejecting apparatus using the same.
  • the liquid ejecting apparatus is applicable to an ordinary printer which effects recording by ejecting ink, a copying machine, a facsimile having a communication system, a multi-function recording device having such functions in combination, or the like, and in addition to an apparatus for drawing a figure or a pattern by ejecting liquid other than ink.
  • ink jet recording head which is a typical one of liquid ejecting heads is provided on an ink jet recording substrate with a ROM (Read Only Memory) to store data such as individual information for the particular head such as its ID (Identity) cord, a driving particularly property of its ink ejecting mechanism.
  • ROM Read Only Memory
  • Japanese Laid-open Patent Application Hei 3 - 126560 discloses an ink jet recording head having an EEPROM (Electrically Erasable Programmable ROM).
  • heat generating resistors for generating energy for ink ejection is constituted in a plurality of lamination film layers on a base portion of an ink jet recording substrate of the ink jet recording head, and a resistance indicative of information peculiar to the head (or individual information) is formed. This is useful when the amount of the information to be store is relatively small.
  • the peculiar information of the peculiar is acquired by the ink jet recording apparatus on which the ink jet recording head is mounted reading the value of the resistance of the resistor formed on the base substrate, on the basis of which the ink jet recording apparatus side can effect optimum drive controls for the liquid ejection from the ink jet recording head.
  • Japanese Laid-open Patent Application Hei 6 - 91877 discloses that when the lamination film layers constituting the ink ejection portion are formed on the base substrate for manufacturing the ink jet recording, a fuse (ROM) is simultaneously formed. By selectively melting the fuse by controlling a logic circuit formed simultaneously, binary data can be written and stored on the basis of the state of the fuse.
  • ROM read-only memory
  • an ink jet recording head as is capable of recording the information
  • a measure should be taken against static electricity.
  • the ink jet recording head is necessarily touched by the user's hand or fingers upon the mounting thereof to the main assembly of the apparatus.
  • an ink jet recording head is mounted each time the ink in the ink container is used up, and the head is touched by the user's hand or fingers each time the mounting.
  • Japanese Laid-open Patent Application Hei 07 - 06095 3 discloses provision of an electrical discharge circuit around contact pads for electrical connection with the main assembly of the ink jet recording apparatus.
  • the conventional ink jet recording head capable of storing the information involves the following problems.
  • a ROM chip is advantageous when the amount of recording data is large, but it is disadvantageous when the amount is small.
  • the problem of the static electricity is not taken into account.
  • the size of the storing element for storing the peculiar information on the head substrate the contact for outputting the peculiar information of the head is relative weaker against the static electricity attack, and therefore, the there is a liability that storing element is broken, or the content of the stored information is changed when the head is touched by the user. In view of this, measurement against the static electricity attack is important.
  • a liquid ejecting head for ejection liquid comprising electric wiring member including a plurality of contact pads which are electrically contactable to a liquid ejecting apparatus; a storing element for storing individual information; a liquid ejection member, provided with an ejection outlet for ejecting the liquid, for ejecting the liquid using electric energy supplied through a part of said plurality of contact pads, wherein said contact pads include an information contact pad electrically connected with said storing element, a voltage source contact pad for supply the electric energy and a grounding contact pad, and said voltage source contact pad or said grounding contact pad is disposed at each of both sides of said information output contact pad, with no individual information contact pad which is electrically contactable to the liquid ejecting apparatus, therebetween.
  • Figure 5 to Figure 12 illustrate an ink jet recording head or an ink jet recording apparatus which is a liquid ejecting head or a liquid ejecting apparatus according to the present invention.
  • the respective constituent-elements will be described.
  • the recording head of this embodiment is of a type integral with an ink container, and may be a first recording head H1000 filled with black ink, as shown in (a) and (b) of Figure 5, and may be a second recording head H1001 filled with color inks (cyan ink, magenta ink and yellow ink), as shown in (a) and (b) of Figure 8.
  • the recording head H1000 or H1001 is securely supported on a carriage 102 of a main assembly of the ink jet recording apparatus by positioning means and electrical contacts, and is detachably mountable to the carriage 102. When the ink is used up, the recording head can be replaced.
  • the first recording head H1000 and the second recording head H1001 are both of a type using an electrothermal transducer for generating thermal energy for creating film boiling in the ink in response to an electric signal, and the electrothermal transducer functions as a recording element and is disposed opposed to an ink ejection outlet.
  • the recording head integrally comprises a recording element substrate for ejecting the ink (in this embodiment, the liquid ejection member is provided with ejection outlets for ejecting the liquid, and the liquid is ejected using the supplied electric power), and an ink container for retaining and storing the ink to be supplied to the recording element substrate.
  • the present invention is applicable also to a recording head not having the ink container integrally.
  • FIG. 6 is an exploded perspective view of the first recording head H1000.
  • the first recording head H1000 comprises a first recording element substrate H1100, an electric wiring member (electric wiring sheet) H1300, and an ink retention member H1500.
  • Figure 7 is a partly broken perspective view of the first recording element substrate H1100.
  • the first recording element substrate H1100 is constituted by a Si substrate H1110 having a thickness of 0.5 mm-1 mm, in which ink supply port H1102 in the form of an elongated through-opening (ink flow path) is formed.
  • the ink supply port 1102 of the first recording element substrate H1100 is in fluid communication with the ink supply port H1200 of the ink retention member H1500 by bonding and fixing the first recording element substrate H1100 to the ink retention member H1500 with high precision.
  • the Si substrate H1110 is provided with an array of electrothermal transducer elements H1103 at each lateral side of the ink supply port H1102, so that arrays interpose the ink supply port H1102, and there are further provided unshown electric wiring of Al and the like for supplying electric power to the electrothermal transducer elements H1103.
  • the Si substrate H1110 is provided along edge portions adjacent opposite ends of the arrays of the electrothermal transducer elements H1103 with electrode portions H1104 for supplying the electric power to the electric wiring and for supplying the electric signals for driving the electrothermal transducer elements H1103, and bumps H1105 of Au are formed at the tops of the electrode portions H1104.
  • the Si substrate H1110 is further provided with a fuse and a peripheral circuit therefor formed thereon, the fuse being effective to store the peculiar information of the head.
  • Figure 11 show the fuse and the peripheral circuit.
  • the fuse is indicated by a reference H1117.
  • four fuses H1117 of polysilicon resistor are disposed adjacent a short side of the ink supply port H1102.
  • Each of the fuses H1117 is connected with a second driving element H1118 for melting the fuse and reading the information corresponding to the melting or non-melting of the fuse.
  • the second driving element H1118 is disposed adjacent to the first driving element H1116 for driving the electrothermal transducer element H1103.
  • a signal for selecting the first driving element H1116 for driving the electrothermal transducer element H1103 is used as the signal for selecting the second driving element H1118 for driving the fuse H1117 as it is. Therefore, the circuit portion for selecting the second driving element H1118 can be formed with the structure similar to the circuit portion for selecting the first driving element H1116. More particularly, the portion from the signal line to which the signal is inputted outside the ink jet recording substrate to the signal line connected to the second driving element H1118 through a shift register, a latching circuit and a decoder, may be common circuit structure with the circuit for selecting the first driving element H1116.
  • the selection circuit H1112 for finally selecting the second driving element H1118 on the basis of the output from the shift register or the like has a structure similar to the selection circuit for the first driving element H1116.
  • a VH pad H1104c for supplying a voltage from a VH voltage source is connected with the electrothermal transducer element H1103 through the VH wiring lead H1114.
  • a GNDH pad H1104d for connection with the GNDH voltage source is commonly connected to the second driving element H1118 connected with the fuse H1117 and the first driving element H1116 connection to the electrothermal transducer element H1103 through the GNDH wiring lead H1113.
  • the GNDH wiring lead H1113 is common for the first driving element H1116 and the second driving element H1118.
  • the ID pad H1104a When the fuse H1117 is to be melted, the ID pad H1104a functions as a fuse cutting voltage source contact for applying a melting voltage, and when the information indicated by the fuse is to be read out, it functions as a signal output contact. More particularly, when the fuse H1117 is to be melted, a voltage (a driving voltage 24V for the electrothermal transducer element, for example) is applied to the ID pad H1104a to instantaneously disconnect the corresponding fuse H1117 by actuating the second driving element H1118 selected by the selection circuit. At this time, the electrical conduction between the ID voltage source pad H1104b for reading the information of the fuse out and the outer circuit such as the voltage source for reading the fuse information, is disconnected.
  • a voltage a driving voltage 24V for the electrothermal transducer element, for example
  • the ID voltage source pad H1104b is supplied with a voltage (power source voltage 3.3V of a logic circuit, for example), so that when the fuse H1117 is disconnected, the potential of the ID voltage source pad H1104b and that of the ID pad H1104a are equal to each other, and therefore, a Hi level voltage is outputted from the ID pad H1104a.
  • a Lo level voltage is outputted from the ID pad H1104a since the fuse H1111 has a resistance value which is far larger than the resistance value of the fuse H1117.
  • the fuse H1117 is replaced with a simple wiring on the Si substrate H1110, and the presence or absence of such wiring may indicate information to be stored and read out.
  • the peculiar information of the head is written during film formation for the wiring lead on the Si substrate H1110.
  • the reading of the information is exactly the same as the foregoing example, but it is not possible to write information after the formation.
  • a resistance element representing information peculiar to the head is formed on the Si substrate H1110, and one end of the resistance element is connected to the ID pad H1104a, and the other end is connected to the GNDH pad H1104d.
  • the main assembly of the ink jet recording apparatus reads a resistance value between the ID pad H1104a and the GNDH pad H1104d to acquire the peculiar information of the head corresponding to the resistance value.
  • structure of resin material having an ink flow path is formed, for each of the electrothermal transducer elements H1103, on such a side of the Si substrate H1110 as is provided with the fuses, the wiring pattern or the resistance element through a photolithography.
  • the structure has an ink flow passage wall H1106 for defining each of the ink flow paths and a ceiling portion covering the top part thereof, and in the ceiling portion, ejection outlets H1107 are formed.
  • the ejection outlets 1107 are provided opposed to the respective ones of the electrothermal transducer elements H1103, thus constituting a group of ejection outlets H1108.
  • the ink supplied from the ink flow path H1102 is ejected through the ejection outlet 1107 opposed to the corresponding electrothermal transducer element H1103 by the pressure of the creation of the bubble caused by heat generation of the electrothermal transducer element H1103.
  • the electric wiring sheet. H1300 is to constitute the electric signal path for applying the electric signal for ejecting the ink to the first recording element substrate H1100, and is formed of a polyimide base material and a wiring lead pattern of copper foil thereon. Also, an opening H1303 for setting the first recording element substrate H1100 is formed, and adjacent the edge of the opening, an electrical contact for connection with the electrode portion H1104 of the first recording element substrate H1100. Furthermore, the electric wiring sheet H1300 is provided with an external signal input contact for receiving the electric signal from the main assembly apparatus, and an external signal input contact H1302 and the electrical contact H1304 are electrically connected with each other by a continuous wiring lead pattern of copper foil.
  • the electrical connection between the electric wiring sheet H1300 and the first recording element substrate H1100 are electrically connected by an ultrasonic heat crimping method between the bump H1105 formed at the electrode portion H1104 of the first recording element substrate H1100 and the electrical contact H1304 of the electric wiring sheet H1300 corresponding to the electrode portion H1104 of the first recording element substrate H1100.
  • a back side of a part of an electric wiring tape H1300 is fixed by adhesive material.
  • An unbonded portion of the electric wiring tape H1300 is bent and is fixed by an adhesive material on a side surface substantially perpendicular to the bonding surface of the ink retention member H1500 for the first recording element substrate H1100.
  • the second recording head H1001 functions to eject three color inks, namely, the cyan ink, the magenta ink and the yellow ink.
  • the second recording head H1001 comprises a second recording element substrate H1101, an electric wiring sheet H1301 (electric wiring member), and an ink retention member H1501.
  • the structures of the second recording head H1001 are similar to the first recording head H1000 described in the foregoing.
  • FIG. 10 is a partly broken perspective view to illustrate the structure of the second recording element substrate H1101.
  • the second recording element substrate H1101 three ink supply ports H1102 for the cyan ink, the magenta ink and the yellow ink are formed and are extended in parallel with each other, as is different from the first recording element substrate H1100.
  • electrothermal transducer elements H1103 and ejection outlets H1107 are arranged staggered, generally along a line.
  • electric wiring, fuses or resistances and electrode portions are formed on the Si substrate H1110a.
  • ink flow passage walls H1106 and ejection outlets H1107 are formation of resin material through a photolithography.
  • bumps H1105 of Au or the like are formed.
  • Figure 12 is a schematic top plan view of an inside of an example of a recording device usable with the ink jet recording head of the present invention.
  • the recording device comprises a carriage 102 on which the recording head H1000 shown in Figure 5 and the recording head H1001 shown in Figure 8 are removably mountable at a correct position.
  • the carriage 102 is provided with an electrical connecting portion for transmitting driving signals or the like to the respective ejection portions through the external signal input contact provided on the recording heads H1000 and H1001.
  • the first recording head H1000 and the second recording head H1001 are guided to a predetermined position in the carriage 102 by a mounting guide H1560 for guiding the recording head to the head mounting position in the carriage 102 and by an engaging portion H1930 for fixed in g the ink jet recording head H1000 relative to the ink jet recording apparatus, and then is fixed at the position.
  • the ink jet recording head H1000 is provided with an abutting portion H1570 for positioning itself to the predetermined mounting position in the carriage 102 in a X direction (carriage scanning direction), an abutting portion H1580 for a Y direction (a recording media feeding direction), and an abutting portion H1590 for the Z direction (ink ejecting direction).
  • the recording head H1000 is correctly positioned relative to the carriage 102, so that proper electrical contact is established between the external signal input contacts H1302 provided on the electric wiring sheets H1300 and H1301 and the contact pins of the electrical connecting portion provided in the carriage 102.
  • the carriage 102 is support for reciprocal motion along the guiding shaft 103 provided in the main assembly of the apparatus and extended in the main scan direction.
  • the recording heads H1000 and H1001 a carried on the carriage 102 such that direction in which the ejection outlets of each of the ejection portions are arranged crosses with the scanning direction of the carriage 102.
  • the liquid is ejected from the ejection outlet arrays onto the recording material 108 fed to the position facing the ejection outlets by a pick-up roller 131 and a feeding roller 109.
  • the printer can be operated as a photographic high image quality printer.
  • the electric wiring sheet H1301 under the experiments has the ID contact pad H1302a, the VH contact pad H1302c, the GNDH contact pad H1302d at the positions shown in Figure 13. More particularly, the VH contact pad H1302c are disposed at one side of the ID contact pad H1302a, and the GNDH contact pad H1302d are disposed at the other side.
  • the opening dimensions of each of the contact pad are 1.3 mm x 1.3 mm and are arranged at the interval of 2.0 mm.
  • the base material of the electric wiring sheet H1301 is polyimide, and a plurality of wiring lines of copper foil are electrically connected to the ID pads H1104a, the VH pads H1104c and the GNDH contact pads H1104d, respectively.
  • a semispherical test contact 140 is caused to approach to the ID contact pad H1302a at the position right above the ID contact pad H1302a and is supplied with the voltage of +20kV, and the electric discharging to the respective contact pads are observed.
  • the experiments are carried out with four samples, and the results are as follows. (Occurrences of electric discharge) Locations ID pad VH pad GNDH pad Sample 1 Yes Yes No Sample 2 No No Yes Sample 3 No Yes No Sample 4 No Yes Yes Yes Frequencies of occurrences 1/4 3/4 2/4
  • the storing element is provided in the recording element substrate. But, the similar effects are provided when a similar storing element is provided in another substrate.
  • one or both of the VH contact pad and the GNDH contact pad are disposed at both of the sides of the ID contact pad adjacent thereto, so that discharge to the ID contact pad is effectively impeded.
  • the adverse influence, to the storing element, of the static electricity attack upon contact of the user's hand or finger to the head when the head is mounted to the carriage or to the main assembly of the apparatus is prevented.
  • the circuit on the substrate for the ink jet recording is improved, it is quite durable against the static electricity, and therefore, the countermeasurement against the static electricity would be sufficient if the disposition of the contact pad of these embodiments of the present invention are employed.
  • FIG 1 is an enlarged view of the external signal input contact portion of the electric wiring sheet of the second recording head used with the ink jet recording head of this embodiment.
  • the electric wiring sheet H1301 is provided with 32 external signal input contacts H1302.Of these external signal input contacts H1302, six pads are ID contact pads H1302a which are disposed substantially at the central portion of the portion where the external signal input contacts H1302 are disposed.
  • the ID contact pads H1302a are respectively connected to the ID pads connected with the fuse H1117 (a simple connecting line or the resistance element ( Figure 11) ) provided at the opposite ends of each of the three ink supply ports H1102 of the second recording element substrate H1101 shown in Figure 10.
  • VH contact pads H1302c are disposed along one side of the array of the ID contact pads H1302a (the side above the array of the ID contact pads H1302a in Figure 1) adjacent the ID contact pad H1302a array. More particularly, in this embodiment, the VH contact pads H1302c are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween). These VH contact pads H1302c are electrically connected to the VH pads H1104c ( Figure 11) provided in the electrode portion H1104 ( Figure 10) at the opposite ends of the second recording element substrate H1101.
  • GNDH contact pads H1302d are arranged along the array of the ID contact pads H1302a on the other side, that is, the side below the array of the ID contact pads H1302a in Figure 1. More particularly, in this embodiment, the GNDH contact pads H1302d are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween). These VH contact pads H1302 d are electrically connected to the GNDH pads H1104 ( Figure 11) provided in the electrode portion H1104 ( Figure 10) at the opposite ends of the second recording element substrate H1101.
  • the other external signal input contacts H1302 other than the ID contact pads H1302a, the VH contact pads H1302c and the GNDH contact pad H1302d, are used for electric power supply to the transistors, sending and receiving signals such as control signals or the like.
  • the ID contact pads H1302a which are relative weak against the attach of static electricity are positioned substantially at the central portion of the external signal input contact portion H1302. This position is hard to be touched by the user, when the user manipulates the second recording head by hand. Usually, the user is more or less conscious so as not to touch the external signal input contact H1302, and therefore, the pads disposed at the center portion is not easily touched.
  • the ID contact pads H1302a are adjacent to and interposed between the VH contact pad H1302c and the GNDH contact pad H1302d, and therefore, if an electrically charged finger of the user is brought so close to the ID contact pad H1302a that electrical discharge occurs, the discharge tends to be toward the VH contact pad H1302c and/or to the GNDH contact pad H1302d rather than toward the ID contact pad H1302a.
  • the structure of the present invention is such that peculiar information in the head is not broken, overwritten or rewritten.
  • FIG 2 is an enlarged view of an external signal input contact portion of electric wiring of a first recording head usable with an ink jet recording head according to this embodiment.
  • the electric wiring sheet H1300 is provided with 21 external signal input contacts H1302.
  • the first recording head is for the black ink, and therefore, the numbers of the electric power supply contacts, the control signal contacts are smaller than the second recording head for the cyan, magenta and yellow inks, as described in the first embodiment.
  • the carriage 102 of the main assembly of the ink jet recording apparatus is capable of accepting the third recording head which is for the photographic printing and which has the same structure as the second recording head, at the position where the first recording head is removed. Therefore, the positions of the 21 external signal input contacts H1302 correspond to the positions of the external signal input contacts H1302 of the second recording head when the head is mounted to the carriage 102.
  • the number of the ID contact pads H1302a of the external signal input contacts H1302 on the electric wiring sheet H1300, six, and the positions thereof are substantially at the center of the portion where the external signal input contacts H1302 are provided.
  • the ID contact pads H1302a are connected to the ID pads which in turn is connected to a fuse H1117, a simple wiring line or a resistance element, Figure 11) disposed at each of the opposite ends of the ink supply port H1102 of the first recording element substrate H1100.
  • VH contact pads H1302c are arranged along and adjacent to the array of the ID contact pad H1302a at one lateral side (above the array of the ID contact pads H1302a in Figure 2. More particularly, in this embodiment, the VH contact pads H1302c are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween).
  • the VH contact pads H1302c are connected to the VH pads H1104c ( Figure 11) provided in the electrode portion H1104 ( Figure 7) disposed at the opposite ends of the first recording element substrate.
  • GNDH contact pads H1302d are arranged along and adjacent to the array of the ID contact pad H1302a at one lateral side (below the array of the ID contact pads H1302a in Figure 2. More particularly, in this embodiment, the GNDH contact pads H1302 d are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween).
  • the GNDH contact pads H1302d are connected to the GNDH pads H1104 ( Figure 11) provided in the electrode portion H1104 ( Figure 7) at the opposite ends of the recording element substrate H1100.
  • the other external signal input contacts H1302 other than the ID contact pads H1302a, the VH contact pads H1302c and the GNDH contact pad H1302d, are used for electric power supply to the transistors, sending and receiving signals such as control signals or the like.
  • the ID contact pads H1302a which are relative weak against the attach of static electricity are positioned substantially at the central portion of the external signal input contact portion H1302, and therefore, the user does not easily touch the ID contact pad H1302a.
  • the ID contact pads H1302a are adjacent to and interposed between the VH contact pads H1302c and the GNDH contact pads H1302d, and therefore, even when if an electrically charged finger of the user is brought so close to the ID contact pad H1302a that electrical discharge occurs, the discharge tends to be toward the VH contact pad H1302c and/or to the GNDH contact pad H1302d rather than toward the ID contact pad H1302a, and therefore, the peculiar information in the head is not easily broken, overwritten or rewritten.
  • Figure 3 is an enlarged view of the external signal input contact portion of the electric wiring sheet of the second recording head used with the ink jet recording head of this embodiment.
  • a second type recording head of this embodiment uses the second recording element substrate H1101 which is the same as the first embodiment, and the difference from the first embodiment is only in the disposition of the external input contacts H1302 on the external electric wiring.
  • ID contact pads H1302a Six pads of 32 external signal input contacts H1302 provided on the electric wiring sheet H1301 are ID contact pads H1302a.
  • the ID contact pads H1302a are arranged in a longitudinal direction (in the direction of the length of the electric wiring sheet H1301) at the center of the portion where the external signal input contacts H1302 are provided.
  • VH contact pads H1302c are arranged adjacent thereto at one lateral side thereof, and six GNDH contact pads H1302d are arranged adjacent thereto at the other lateral side thereof. More particularly, in this embodiment, the VH contact pads H1302c are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween), and the GNDH contact pads H1302 d are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween).
  • the ID contact pads H1302a which are relative weak against the attach of static electricity are positioned substantially at the central portion of the external signal input contact portion H1302, and therefore, the user does not easily touch the ID contact pad H1302a.
  • the ID contact pads H1302a are adjacent to and interposed between the VH contact pads H1302c and the GNDH contact pads H1302d, and therefore, even if an electrically charged finger of the user is brought so close to the ID contact pad H1302a that electrical discharge occurs, the discharge tends to be toward the VH contact pad H1302c and/or to the GNDH contact pad H1302d rather than toward the ID contact pad H1302a, and therefore, the peculiar information in the head is not easily broken, overwritten or rewritten.
  • Figure 4 is an enlarged view of the external signal input contact portion of the electric wiring sheet of the second recording head used with the ink jet recording head of this embodiment.
  • a second type recording head of this embodiment uses the second recording element substrate H1101 which is the same as the first embodiment, and the difference from the first embodiment is only in the disposition of the external input contacts H1302 on the external electric wiring.
  • ID contact pads H1302a Six pads of 32 external signal input contacts H1302 provided on the electric wiring sheet H1301 are ID contact pads H1302a.
  • the ID contact pads H1302a are disposed substantially at the central portion of the portion where the external signal input contacts H1302 are provided.
  • the VH contact pads H1302c and/or the GNDH contact pads H1302d are disposed at positions adjacent thereto.
  • Each of the ID contact pads H1302a is are interposed between the VH contact pads H1302c and the GNDH contact pads H1302d in the longitudinal direction and in the transverse direction.
  • two arrays of three ID contact pads H1302a extend inclined at the central portion of the portion where the external signal input contacts H1302 are provided, and three arrays which comprise six VH contact pads H1302c and six GNDH contact pads H1302d extend so as to interpose the respective ones of the arrays of the ID contact pads H1302a.
  • each of the ID contact pads H1302a are interposed between the VH contact pads H1302c or the GNDH contact pads H1302d which are disposed around it, more particularly, at the top, bottom, left and right. For this reason, the peculiar information in the head of this embodiment is less easily broken, overwritten or rewritten then in the heads of the other embodiments. More particularly, in this embodiment, the VH contact pads H1302c are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween), and the GNDH contact pads H1302 d are immediately adjacent to the ID contact pad H1302a array (namely, with no ID contact pad H1302a therebetween).
  • the ink jet recording head of any of the foregoing embodiments is not limited to those of the ejecting types, but is applicable to the ink jet recording heads of various ink ejecting types.
  • the external signal input contacts in any of the foregoing embodiments may be a pad connected to the similar set of pads.
  • the ID contact pads they may be usable as information writing pads when the storing element is an information writable (not only readable) element.
  • the problem of the overwriting or rewriting of individual information in the storing element due to the static electricity upon the head mounting can be solved.

Landscapes

  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Pens And Brushes (AREA)
  • Surgical Instruments (AREA)
EP05011941A 2004-06-02 2005-06-02 Tête d'éjection de liquide et dispositif d'éjection de liquide en utilisable Not-in-force EP1602485B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004164555 2004-06-02
JP2004164555 2004-06-02

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EP1602485A2 true EP1602485A2 (fr) 2005-12-07
EP1602485A3 EP1602485A3 (fr) 2007-07-25
EP1602485B1 EP1602485B1 (fr) 2011-10-12

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US (2) US7591538B2 (fr)
EP (1) EP1602485B1 (fr)
KR (2) KR20060049476A (fr)
CN (4) CN100503248C (fr)
AT (1) ATE528137T1 (fr)
AU (1) AU2005202407B2 (fr)
CA (1) CA2508867C (fr)
HK (1) HK1077265A1 (fr)
RU (1) RU2320490C2 (fr)
SG (2) SG139770A1 (fr)
TW (1) TWI270470B (fr)

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EP1602485B1 (fr) 2011-10-12
CN1704243A (zh) 2005-12-07
CN100503248C (zh) 2009-06-24
US7591538B2 (en) 2009-09-22
CA2508867C (fr) 2010-08-03
US20050285904A1 (en) 2005-12-29
CN101130302B (zh) 2010-07-28
EP1602485A3 (fr) 2007-07-25
CN1960876A (zh) 2007-05-09
CN100496980C (zh) 2009-06-10
CN100351087C (zh) 2007-11-28
CA2508867A1 (fr) 2005-12-02
AU2005202407B2 (en) 2007-07-05
ATE528137T1 (de) 2011-10-15
SG117615A1 (en) 2005-12-29
KR20080100157A (ko) 2008-11-14
CN1960877A (zh) 2007-05-09
TWI270470B (en) 2007-01-11
KR100992208B1 (ko) 2010-11-04
RU2320490C2 (ru) 2008-03-27
US8109610B2 (en) 2012-02-07
CN101130302A (zh) 2008-02-27
HK1077265A1 (en) 2006-02-10
AU2005202407A1 (en) 2005-12-22
US20090295874A1 (en) 2009-12-03
KR20060049476A (ko) 2006-05-19
SG139770A1 (en) 2008-02-29
RU2005116828A (ru) 2006-11-20
TW200611832A (en) 2006-04-16

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